摘要：
try { string MyFileName = AppSetter.SysInfoPath + @"\DrawTools\csg.exe"; string MyExtName = ".csg"; string MyType = "csgfile"; RegistryKey key = Registry.ClassesRoot.OpenSubKey(MyExtName); if (key == null || key.ValueCount == 0) { RegistryKey MyReg = Registry.ClassesRoo 阅读全文